Coupling reverse osmosis and osmotic distillation for clarified pomegranate juice concentration: Use of plasma modified reverse osmosis membranes for improved performance |
| |
Affiliation: | 1. Laboratoire de Microbiologie Appliquée et de Génie Industriel, Ecole Supérieure Polytechnique, Université Cheikh Anta Diop, BP 5005, Dakar-Fann, Dakar, Sénégal;2. QualiSud, Univ Montpellier, CIRAD, Montpellier SupAgro, Univ Avignon, Univ Réunion, Montpellier, France;3. CIRAD, UMR QualiSud, F-34093 Montpellier, France |
| |
Abstract: | In this study, a low pressure nitrogen plasma (LPNP) activation was implemented to modify the surface characteristics of a commercial thin film composite (TFC) polyamide reverse osmosis (RO) membrane. The free energy of interaction (ΔGiwi) results showed that the hydrophobic nature of untreated TFC RO membrane became considerably hydrophilic with the effect of LPNP treatment. Among various plasma powers and exposure times tested, a general decreasing trend was observed for the water contact angle with increasing plasma duration, reaching a minimum of 13.2 ± 0.8° for 90 W at 15 min. A remarkable increase in water flux of the LPNP modified RO membrane was observed throughout the RO process, which promoted higher soluble solids content (SSC) values in the concentrated juice at the same period of time with the plain one. The higher SSC values achieved by the modified RO membrane enabled 30% time-saving during further osmotic distillation process. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|